Advanced numerical modelling of the energy generation using alternative fuels

The increasing concern about environment and the need to limit our energetic dependence on fossil fuels, push toward the utilization of alternative fuels (e.g. NG/H2 mixtures, biogas/bio-methane) in both industrial and domestic applications.

In this framework, large interest is paid to novel combustion technologies, as Flameless or Moderate-or-Intense Low-oxygen Dilution (MILD) combustion, ensuring a large fuel flexibility with high combustion efficiency and low NOx emissions.
The utilization of alternative fuels and development of novel combustion technologies require a deep insight into the combustion process in complex domains through advanced numerical simulations.

Activities on this topic are:

  • Combustion of H2 admixtures from domestic to industrial scale systems
  • Development of numerical tools for MILD combustion
  • Analysis of novel diagnostics

Research group

Prof. Chiara Galletti,
Prof. Leonardo Tognotti,
Dott. Rachele Ramioni

External collaborations:

  • Université Libre de Bruxelles (Prof. Alessandro Parente)
  • Shahid Beheshti University, Iran (Prof. Javad Aminian)
  • Istituto di Ricerche sulla Combustione-CNR (Dr. Mara de Joannon)
  • Aziende di settore (Immergas)


  • FAR-FAS 2007-2013 “STECH – Smart Turbine TECHnologies (STECH)”
  • Regione Toscana, Filiera Idrogeno, DICCISM/DICI 2009-2012;
  • Ricerca di sistema – CNR/Tecnologie carbone pulito, DICCISM 2010-2012
  • FISR 2006 “Sistemi Integrati di Produzione di Idrogeno e sua Utilizzazione nella Generazione Distribuita

Main publications:

  • Aminian, J., Galletti, C., Tognotti, L. Impact of sub-grid scale models on resolving mixing and thermal shear layers in large eddy simulation of JHC flames (2019) Applied Thermal Engineering, 149, pp. 1244-1254.
  • Galletti, C., Ferrarotti, M., Parente, A., Tognotti, L. Reduced NO formation models for CFD simulations of MILD combustion (2015) International Journal of Hydrogen Energy 40, pp. 4884-4897.
  • Isaac, B.J., Parente, A., Galletti, C., Thornock, J.N., Smith, P.J., Tognotti, L. A novel methodology for chemical time scale evaluation with detailed chemical reaction kinetics (2013) Energy and Fuels 27, pp. 2255-2265.
  • Galletti, C., Parente, A., Derudi, M., Rota, R., Tognotti, L. Numerical and experimental analysis of NO emissions from a lab-scale burner fed with hydrogen-enriched fuels and operating in MILD combustion (2009) International Journal of Hydrogen Energy 34, pp. 8339-8351.
  • Galletti, C., Parente, A., Tognotti, L. Numerical and experimental investigation of a mild combustion burner (2007) Combustion and Flame 151, pp. 649-664.